Exception in thread "main" java.lang.NoSuchMethodError: org.apache.commons.collections.map.ListOrderedMap: method <init>()V not found
at net.sf.json.JSONObject.<init>(JSONObject.java:1299)
at net.sf.json.util.CycleDetectionStrategy.<clinit>(CycleDetectionStrategy.java:37)
at net.sf.json.JsonConfig.<clinit>(JsonConfig.java:58)
at net.sf.json.JSONArray.fromObject(JSONArray.java:122)
at cn.itcast.bean.TestJson.main(TestJson.java:21)
答案：commons-collections.jar 这个包不兼容。换一个包
json错误
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转载自huweiyi.iteye.com/blog/1900891
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